Tractor implement



Aug. 10 1926.

M. R. BRUNER TRACTOR IMPLEMENT 8 Sheets-Sheet 1 mrzwrmef;

INVENTOR,

ATTORNEY 5 a sheets-sheet 2 M. R. BRUNER TRACTOR IMPLEMENT d Jan. 8

Aug 10 1926.

Se o) o5 M mwa/Q,

WITNESSES Aug. 10 1926.

M. R. BRUNER TRACTOR IMPLEMENT 8 Sheets-Sheet E INVENTCM,

lllllll. I.

ATTORN EY Aug."1o 192s.

WITNESSES MR.BRUNER.

TRACTOR IMPLEMENT Filed J/an. 8, 1925 8 Sheets- Sheet 4 INVENTOR,

ATTORNEY Aug. 10

M. R BRUNER.

TRACTOR IMPLEMENT 8 8 Sheets-Sheet 5 Filed Jan.

l A vvvvvvvvvm WITNESSES ,ATTORNEY Aug. 10

M. R. BRUNER TRACTOR IMPLEMENT Filed Jan. a, 1925 avsheets-sheet e INVENTO WITNESSES Aug. 10 1926.

M, R. BRUNER TRACTOR IMPLEMENT' Filed Jan. 8, 1925 8 Sheets-Sheet. 7

' ATTORNEY All ' Aug. 10 1926.

M. R. BRUNER TRACTOR IMPLEMENT a s sheets-Sheet a Filed Jan.

7 w w w, ||li| aww ME "mq ATTORNEY Patented Aug. 10, 1926.

MARTN R. BRUNER, OF BUCKLAND, OHIO.

Tano'ron IMPLEMENT.

Application filed January 8,' 1925. -Serial No. 1,244.l

This invention relates te a tractor imple-- ment, driven preferably by an explosive engine, and especiallyadapted to be used in cnnducting farm operations on a comparatively large' scale. The specific forni of tie invention herein disclosed is used for plcw-V ing, but it will 1lie-'obvious that many of the salient-features thereof may be used in connection with iinplen'ients designed tar lo other purposes.' l

@ne of the principal objects of the" invention is to provide, in a machine of this type, improved vmeans for 'guiding'or` positioning the sam-e, so as to perform thel re- -ln connection therewitlnl have provided improved driving mechanism and'impro-vedmeans for supporting the engine in cooperative relation therewith, so that all parts operate in unison to eifectthe desired result in the most expeditious manner.' Special means are provided forswing'ing theV rear end of thev frame laterally abouteitlier one of the front wheels .as a center, so as to immediately compensate for any displacement jwhich may result from turning` a corner.

The hull wheel and land side wheel, which are lecated at thefront end of the machine,

perform the function of steering' wheels, and im the-engine is supported to swing therewith, while at the same time. maintaining' an opF erative position with respect to the rear wheel.

The main traction or bull wheel is so constructed that the resultant tractive force is exerted at all times in a dir-ectionsub stantially opposite to the resistance of the work performed, whereby the side draft is neutralized.

The invention also includes V-iinproved means for supporting the plows7 for adjustH ing the'depth thereof, and for rendering` the Sam inoperative when moving from one field vto another. y e5 The invention consists further in numerous novel features and combinations thereof, which will be more fully explained in Vconnection -witl'i `the accompanying drawings,

which illustrate the preferredform of the invention.

v`the kdrawings` Figure l1 is a side"elevationL-of thefrini' show more 'cleariv the biill Iwliel' being shown .in section.'

lquired work in the most eflicient manner.-

theop-eijative mechanisni;v i555 ure is plan viewer .the vinventia-mi` Figure 3 is a plan' view of the frontfpoi tion of the main frame and certain operative parts associated therewith.

Figure 4 is a front elevation of the main @il frame and steering'gear, showing` the connection of the latterto therear portion of the yengine frame, which is shown in section.`

Figure 5 is a front eleva-tion of the main. frame' with the engine mounted thereon. 65

Figure 6 is a vertical section through the engine casting, showing .also the colter disks and trash feeders.

Figure 7 is a detail View, partlyin 'sec-v tion, showing the roller gear. drive for the if' trash feeders.

Figure 8 is a detail plan view of a por'- tion of the bull wheel.

Figure 9 is a detail sectional view show ing'the reversing; clutch and'gear connec-J 'I5 tions for the rear wheel. p

Figur-e 10 is a sectional de'tail'view talen at right angles to the plane of Figure 9.

Figure 11 is a detail view in side elevation ofthe clutch and worm gear connection forswinging the rear wheel about a vertical axis. Y.

Figure 12 is a horizontal sectional view of the same. v

Figure 18 is a detail view of the driving'w gear connections for the rear wheel.'

Figure 14 is a detail vie-w of the manually operated means for releasing the clutch to restore the rear wheel to its normal position for forward travel.

Figure 15 is a detail sectional view taken right angles to Figure 14.

Figure 16v is a detail view taken on the line 16-16 of Figure V9.

AFigure 17 is a det-ail View in side. elevation of the means for adjusting the depths of the plows. Y

Figure 18 is a plan view of the same.

Figure 19 is a detail view ofthe means for adjusting the land side wheel for trans-v porting; .the imple-ment from one iield to another.

Mv invention. in its pres-ent embodiment,x

includes a main 'frame having a central' longitudinal member 1, which may be called 'he backbone of Ythemaclnne andlis prefer#V A ably tubular 'and' of comparativelyflarge di-fy ameter, so as to secure the maximum rigidity to resist lateral and torsional. strains. Wel'd-v ed or otherwise rigidly 'secured' tov therer Y" end of *thi'siba" bpne is a horizontally 'gli raised ruige, which is supported by a fear is provided one side Vwith n downwardly and luter lly inclined leg 8, as shown in Fig;- ure 5 which terininet s in oinosed oorterated eers 9 for receiving e pivot bolt 10, which passes through an eye 1l formed in the end or" the arm 5, end constituting o. pivotal connection between the engine lileck and the yoke el. Extending; from the opposite side or" the engine block und rigidly secured thereto is e supporting' hin' 12, heving e roller 13 mounted on its outer end, end adapted to riderupon en arcuate track i4, rigidly secured to the erm (i and described about the pivot loolt 10 as u center. Securel to the upper side of the treck 1l is o. keeper 15, beneath which the roller 13 is guided.

rl'lie engine herein shown has two cvlinders 16 and 17 Se tured to its front end ree-.r ends respectively, end bearings i8 und 19 are provided within the engine casing 7, as shown in Figure G, and lined with bushinrs 2O und 21 respectively, 'for supportingl e crunk shaft 22. The latter is orovidcd with two cranks suitably located for coopcrntion with tlie cylinders 16 and 17. 'flic engine casing T is extended nt one side in t e torni ci n stile 24e, on which is journeled he mein tract" or bull ii'heel huslfng 2T is also provided .if'ithin tire entJ erle 2e to provide edilitionel 'ieering' ror the crenk shui't which er:` tends through end beyond the huli 95, here it is provided with e ily wheel Q8, ns seen in Figure 2.

The :nini 6 terminates outwardly olE the track 14 in a yoke 9.9, es sh wn in Figure i, for receiving e. vertical holt 30, which hes a threaded connection w'tli the lower erin of the yoke, so that it may be ndj usted vertically therein. The bolt is support d i. u bracket 81, and lies e hesrinkg;` Si) within which is journnled stud 33 form 'i i end otn'link 34, which is provided :n it other eno with e, laterally extending` spindl 35, 'forming en axle tor the land side wheel Secured to und extending rearwardly from the bracket 31 is e yoke 37, which is pivotelly connected to one end e rod BS, the other end of the rod being pivot-elly connected to en erin 39 which is rigidly secured to a. seat 40, 'form-ed on the engine casing', and extends rearwardly therefrom.

W tl about the same center, by ineens the rod 38 the lend sioe wheel 36 is also swung through the same angle, and mein tained in parallelism with the hull wheel.

it may also he noted that the lend side wheel 36 lis of sineller diameter than the bull wheel 26, and i adopted to ride upon the unplowed lend, while the bull wheel rides in the deed ilrrow. By ineens oit the holt 30, the lend side wheel 3G may he raised or lowered to correspond with the depth oit the urrow, so that the axes or" the wheels may he maintained in horizontal positions. The link Sli is adapted to he swung about the stud es e center, between the position shown in full lines in Fixgure 19 und the position shown in dott-ed lines, and will he normally held in either ot these extreme post tions by means oi' the respective spring the yoke catches l1, secured to the arms ot 3T. When the link 34 and the spindle ere in the uppermost or dot-ted line position, the lend side wheel 36 is in position for plowing, and vlien swung to their lowermost or full line position., the lend side wheel is in position `for traveling overV the rond.

TAWhen the engine casing 7 is swung laterelly about the pivotbolt l0 es above described, the hull wheel 25 and lend side wheel 36 are also laterally, and serve es e steering' means for the machine when the letter is traveling; vforwardly, und the engine et the same time, together with the mecnainisin for propellingl the machine torwerdly, maintains its opereiiife relation to the hull Wheel which constitutes the mein drive wheel, es well es steering' Wheel. This driving mechincludos e pinion 4t2 mounted on the shaft 22 outside of the engine cesin and sdeped C o he operatively connected to -v hy meansl of e reversing `lutch pulley 42 of the usuel construction. The pinion is in mesh with en idler gear mounted on e stud el which is secured to the engine casing. The idler 43 inV turn drives u gear wheel e5, which is secured to one end ot e. countersheft 4in, journeled in suitable hearings l? which are secured to the engine casing. The opposite end of the shaft has e roller gear e8 secured thereto, which meshes with the internal gear 49, formed on the inside ot the rim of the bull wheel 2G.

A laterally projecting is rigidly secured to the backbone l, and serves es a. support tor the steering gear mechanism. Formed on the rear side of the erm 50is e socket 51. which provides e support for the lower end of ey steering column 52, which extends upwerdly and rearwardly and is rotatably mounted in hearings 53 secured to the front side of e platform 54. The upper end 01"' the steering column 52 is provided with a steering wheel 55, conveniently located in front ot the drivers seat 56, which is supported by the platform et. PHOQ?, se-

cured to vthe lower end of lthe steering column 52, meshes with a gear 58 securedv to a countershaft 59, which is journaled in a suitable ibearinv'() formed on the arm 50, the rear end-or the shaft 59 being suitably braced from :the steering column 52 by a linl; (5l.y The shaft 59 extends forwardly through the -bar 50, and is provided at its forward end with a bevel pinion 62, which is rin mesh with anfa-rcuate racl; bar 68, rioidly,v

secured by a framework to the engine casingy7, and-concentric with the pivot bolt l0. A stud 'extends rearwardly beyond the rack bar 68, Figures 2 and l and is provided with a roller 66, which is guided beneath a keeper 467 secured to the upper side fof the armv 50, so `as to 'maintain the rack bar always in mesh withthe pinion G2, and also to serve vas :additional means to lprevent dis-` placement f of the engine.

Theframe ofthe machine is adapted to support a plurality .of plows 68, two being shown inthe'presentuinstance VEach plow is secured in the usualginanner toY beam 69, which is provided/atit-s forward end with aV gage wheelv 70, and-is pulled forwardly by means of a draw bar 71, pivotally connected to its front end. rllie second plow, as bestA shown in Figure', is provided with an ein tensionzlinlr 72 between the ybeam and draw bar, so that it will trail behind the first plow. rlhe draw barsvl are guided in keeper 73 secured to the under side of the bar el, and each draw` bar is pivotally connected at its forward end. as at74, to one end vof al bell crank-75, which-is intermediately fulcrumed, as at 76, on a bracket arm 77 secured to and projectino;v forwardly from the bar fl. A rod 78 is pivotally connected vto the bell crank on thef opposite side of its fulcrum and extends rearwardly, being surrounded by an expansile coiled spring 7 9,v which normally holos'the draw bar 7l in its kforemost position, but-is adapted to yield when the plowv encounters zin-obstruction. The bell crank 75 is extended beyond its pivotal connection with the rod 78 and provided with an eye 80, which is received by a stud bolt 8l se curedto andv extending lforwardly from the bar il, and provided with a nut 82 forming,` an adjustable stop, :which positively limits the rearwardmovement of the draw bar.

For adjustably supporting .the plows vat the required vdeptlnthe shoe of each plow has vsecured thereto a rearwardly projecting arms83, which is pivotally connected to the lower end of a supporting,- standard 84E. livotally connected. to `the upper .endZ of the` standardS is a downwardly extending bar 84%;(Fig'ures l', 4, 17 and 18) which is guidedwfor vertical movement in a keeper 85 se-l cured to .theimainframeand is provided on t and rear-.facesawith ratchettteeth.

with opposed pawls 89 engageable with the respective teeth 85, and normally urged into engagement therewith by springs 90, whereby, 4when the lever 87 is roclred baclr and forth on its pivot 88, the pawls alternately' b o'e successive ratchet teeth and raise the bar cila'rand standard 8st step by step, and correspondingly elevate the plows. For releasing the bar 8@ to lower the plows, a thumb lever Ql is pivoted at 92 to the handle of the lever 87, and connected by links 93 and at opposite sides of the pivot with' the respective pawls 89. A spring 95, underneatht-he thumb lever Sl, holds the latter normally in position to permit the pawls to engage'the teeth 86, butupon depression of 1|the thumb lever, the pawls are moved in opposite directions toV disengage ythe ratchet teeth and permit the bar 84:11 to be lowered. ltwill be noted that there is sufhcient lost motion between the pawls 89 and the links 9&3 and 9i to permit the pawls to function in raising the plows, while the thumb lever remains in normal position.

ln orderto prevent sidewise movement of the plows, due to the lateral pressure against the mold board, an abutment y9G is l for eachv plow beam, and is secured ble part of the mainframe. The traction 'orbull wheel` 26 is Iso constr cted as to substantially neutralize the side draft result' ig from the action of the plows. As heretofore stated, thehub 25of the bull wheels is journaled on the trunnion 24. The spolres 97,'e2nending from this hub, are curved or dishechas shown in Figure 2, lso as to clear the roll r gear The rim 98 is secured tothe outer ends of the spokes, and has secured to its outer face a serie-s of traction lugs 9.9, which, as shown in Figures 7 and 8, are channel shaped in cross section, and inclined in a direction substantially perpendicular' to the resultant of the forces acting upon the plows. rlfhe ends of the lugs 99, which are' supported by supplemental rims 100, project beyond the side of the furrow and are cut out as at 99, forming two blades which cut into the land side, thu-sv increasingv the traction without addingl to the weight.

Hanger bars lill (Fleures 5 and 7) are supported in front of the plows at opposite sides-of the engine casing,` 7, one of these being pivotally supported on the outer surface of thev bearing- 19, and the otherl being pivotally supported on an annular flange 102, which surrounds the trunnion 2li, and overhangjs the inner ena of the hub rl`he lower ends of tiese hanger bars are provided, with bearings 108 in which is journaled'a yol're 101i, having forwardly projecting arms i015, A shaft 105, journaled in these arms, carries colt-er dislzs 107 and trash fil feede-rwheelsl08. The vshaft-i108, at onek end,

is provided =with roller gearf309,"no1lvy mally in mesh with the internal gear 19, and

'its and rods and sleeves 112, .d hold the Qc 109 normally in mesh with the internal .1 19, so as to positively rotate the shaf' and cause loose stalls and other trash to oe fed to the colter disls 10.7, and severed tb eby. The springs 10e, however, are adapted to yield and to permit the roller s'ear 1 09 te be thrown out of mesh in case the trash feeders meet with any un4 usual obstruction,

As hcreinbefoi'e mentioned, the ring 2 at the rear end of the main ame is supported by the rear wheel rEhe latter is secured to 115, the ends of which are journaled fing i-' 116, (l 'ur-es 1 and 11) secured to and depending; from a ring 117, slidahly mounted in a channel 11S (Fio'ure 13) formed on the under side f the ring 2. A semi-circular worm gear 1 9 is secured to the inner side of the rino' 117 by means of lugs 120. 1n mesh with the worin gear 11S is a worm 121 carried by a shaft which is jiournalcd in bearir 123 and formed at one side the rin.;` 2., The worin 121 is rotatably mounted on the shaft 122, and is normally compelled to rotate with the `shaftby means hereinafter described. Secured to the front end o the shaft 122 is a oimbal joint 125, connnected to a sleeve 12o within which is splined a telescopic ei;- tension 127, the forward end of which is mounted in a U--shaped bearing.;` member 123 T1injures 9 and 16). This bearing member is journaled on vertical shaft 129, which is rotatably supported at itslower end in a soci;- et formed on the engine casing` 7. Thus, the angular relation between the shaft 123 and the engine casing' permitted to adinet itself when the latter is swung laterally with the bull wheel in steering' the machine. A bevel gear 131 is secured to the forward end of the shaft 12',T between the arms of the bearing member 123, and is adapted to be driven by a bevel gear 132 secured to the ical shaft 129. The upper end of the it 129 is journaled in a bearing 133 formed on the side of the engine casing, and secured to the upper extremity of the shaft is a bevel ear 134, which is in constant .iesh with two opposed bevel gears 135 and which are rotatably mounta ..-.orirontal shaft 13.7, but held against movement longitudinally of the shaft by suitable ollers 133, or the like. The shaft 13'? enten/fl through the side of the enin which it is journaled, and

gine casu has a spur gear secured to its innerend, and driven by a pinion 1410 securedV to the crank shaft 22, inside the crank case. 3. reversible clutch member 141 is splined to the shaft 137 between the bevel gearsY 135 and 136, and is formed with opposit'ely disposed clutch faceswhieh, upon movement of the vclutch member in one dir ction or the other, may cause either one of the gears 135 or 136 to be driven, thus driving the bevel."

1341 in either direction desired, and conei iently hy the train of mechanism above ymibed, driving' the worm 121 in either direction turn the rear wheel 3. For shif ig the clutch member 1-11, the latter is provided with a ring 142 to which a yoke is oivotaliy connected. V1his yoke is secured io the upper end of a recit shaft 1111i, which is liournaled in hearings 1&5 s ecured to the engine casing, and has at its i f end a laterally projecting arm 146,

which is pivotailv connected at its outer end to a link 1li?. This link, asshown in Figures 3 and has its outer end pivotaily conn cted at 143 to the forwardly projecting *in of a bell cranir 149, which is intermediately fulcrumed at to the main frame bar 1. The opposite end of the bell crank 1419 pivotally connected to a pull rod 151, which extends rearv ardly, and'is connected to a hand lever 152 mounted on the frame within convenient reach of the driver on the seat 56. By themanipulation of the lever 152, therefore, it will be seen that the bell cranlr 1119 may be rocked about its fulcrurn to move the link 1517 longitudinally, andV thereby rock the shaft 1114, causing the clutch member 14:1 to engage and drive either one of the bevel gears 135, 136, and swing` the rear wheel 3 in either direction. lt will be noted that the pivot 1113 is normally in substantial alinement with the pivot bolt 10 about which the engine and bull wheel swing, so that the operation of steering the machine, forwardly will not affect the position of the clutch member 1111.

11s stated above, the worin 121 is rotatably mounted en the shaft 122. rEhe worm, however, is provided with a hub having clutch teeth (Figures 11 and 12) which are f adapted to be normally engaged by complementary clutch teeth 15-1L formed on a sleeve 155, which is splinec to the shaft. The outer end of the clutch sleeve 155 is formed with a socket, which receives anexpansile coiled spring 156 acting between the sleeve and collar 15.7 secured to the shaft, and normally urging the clutch teeth into engagement. Secured to and surrounding the clutch sleeve 155 is a ring,- 158, adjacent to which are two pins 159 having a trip arm 160 secured thereto in depending relation. rThe pins 159 extend through a supporting bracket 151, secured to and upstanding from the ring 2 and coiled springs 162 surrounding the-pins, holdthe trip arm'160 normally against thefside ofthe bracket. Two abutments 163 are ksecured tothe ring 117 at opposite sides there iin such a position that when the ring 117 and wheel 3 have been swung through an arc of approximately 900 in either direction, the trip arm A160 will be engaged by one or .the other of. the abutments and tilted lso as Vto forcethe ring 158 away from the worm 121, anddisengage the clutch teeth 1153 and 1541-, as shown in VFigure 11. Y

/ ien the clutch v1%11 has'been shifted as above described, the lengine Yis Aconnected directly to the worinv gear -119 until the rear wheel 3 assumes a ,position substantially tangent to arcircle struck about the ground engagingportion ofthe bull wheel 26, or the land side wheel 36 as the case maybe, and

at this point the clutch sleeve'l is auto` matic-ally disconnected from the worm 121. lt is .then desirable v to connect Ethe wheel 3 to the engine, so that the rear end of the machine may be vcarried laterally about one ofthe front wheelsas acenter. yFor effectingthi-soperation, a driving pinion 164 is keyed to the shaft.122,.and agear wheel 165 (Figures 12 and 13) Yis securedto one side of the wheel y3, and atthe termination of the swinging movement ofthe latter is brought into a position opposite the pinion 164, as shown -in Figure 12, .and v,in dotted .lines in Figure 2. A' shaft .166;is mounted in bearings v167, above andparallelto the shaft 122. yoke 168 is mounted .on the rock shaft, and secured in proper relation thereto by means of a set screw 169orthe like. vApinion 170 is journaled between the arms of the yoke, andis adapted to bedepressed into engagement with the pinion 164 and gear 165, asshown in fulllines in Figure 13, so as to -coinplete vthe ldriving connecting between the engine and the wheel 3. For effecting this engagement, a pedal 171 issecured to the shaft 166 by'means of a set screw 172 or the like, and 'extends within reach of the driver. The pedal is normally held in its uppermostl position bymeans of a spring 173.

devicehas `been provided for manually releasing' the trip arni.160 when it is desire-,d to vswing `the rear wheel-Shack to normal position. 'hisdevice includes a lever 174 (Figures 11,14 and 15) Ywhich .is intermediately-pivoted, as at 17 with its rear .end projecting behind-thetrip arm. A cable,176 attached to thel frontend ofthe lever and entends withinreachxof the driver, so that by pulling-upon thecable the lowerend of the trip arin may be swung outwardly, as indicated in dotted lines infFigures 14 and 15, to clear the abutment 163 and permit the clutch teeth 15a to again engage the'y teeth.

'lllhen thisgengagenient has been effected, the Y clutch 141 having been previously connected to rcrersed,.the worm 121 will be driven in the o'iposite direction to restore the wheel 3 to its normal position.

lin thenorinal opera-tion of the machine,

bull Twheel is driven through the mei the roller gear 4:8 and the gears 13 and 4:2, the latter being operatively the crankshaft ofthe engine by neans of the reversing clutch 42a, so that the machine may be driven either forwardly or haciwardly. The reversing clutch is control-ledby means of a lever 177, which is pivotally mounted atits rear end to a bar 178, rigidly connected Vto the engine casing. The free end of the lever ,177 is connected b-y-a ylink 179 (Figures 2, 3, 4f and 5) to a bell crank 180 fulcrumed on the main frame bar fr, and having lits other arm connected by arod 181 to a hand lever 182 near the drirers seat. The pivotal connection between the bell era-nk 180 and the link 179 isnormally in alinenient with thepivot bolt 10, so that the `-position of the clutch42EL is DG? fpd by the swinging movement of the engine'in steering.

es heretofore explained, the rdraw bars Tl are p litt-ed by the springs 79 Vto yield, to av cei -a n ent-ent, when vthe plows encounteran unusual obstruction. lnv the obstruction proves to be `impassable, provision is niadc for ydiscennecting the clutch e12a-in order to ,prevent 4injury to the inachine. Ylhis result is effected by means of chains 183 whieh connectthe.respective plow beainsgGQ-to thefrod 181, and as the .draw bars 7l and bell cranks approach the liinit of their reari lmoveinent, the chains pnlltherod 181 rearwardly a. sufficient-distance rto throw *they clutch 112 `into neutral postion. i 'i 'Fri'nn the foregoing description, it will be understood .that Athe "traction or :bull wheel may be drivcnidirectly from the engine either vforwardly orbackwardly, the connection being ,made through the yreversing clutch 112, which is controlled bytheihand lever 182. .The machine-is normally steeredk by means of the steering wheel-55, which,

through theA gears 57,. 58 and- 62,.- operates to swing i the :engine in .either direction about the pivot bolt 10 as a center. The bull wneel `being journaled von the. triinnion ywhich is an integral part oftheV engine fraine,swings with the enginel and maintains its operative connection therewith. ,T he lan d side wheel 36 isialways maintained. in pal-rallelisni withthefbull'wheel bymeans ofthe rod rtftiines, however', itis desirable to adjustthe rear end of the machine laterally without movingthe machine longitudinal-- ly. ,I'lhisis particulary desirable whenturning corners. ln order to'effect this movenient, the clutch e2 is thrown into neutral. position, and-theclutch ,141 is shifted'into engagement with one .or the .other of the lll) the hand lever o. beine; Y form lill is rountil `ne oi 'the abutand then the cable is pulled to release the p arm i60, iereupon the clutch 155 u ll is driven to the wheel 3 back wed s e., the i lllt l,

is swung into the position sncf-wn in lull lines in Figure li), so that the plows will be carried above the ground.

lt is important that a machine of this kind be built as light as possible, not only to make it less expensive and easier to operate but also to prevent packing ot the soil especially when the latter is moist. fit the same time there must be sufficient traction to pull the plows. The distance between the outer edges of the rims is therefore somewhat less than the width of the furro v, and the blades at the ends ot the lugs 99 extend tar enough so that they will cut into both sides of the furrow, thus increasing the traction. rlhe resistance in connection with the driving of the colter disks and trash feeders will further increase the traction so that the maximum of traction is obtained with 'the least possible weight.

A harrow li` may be attached to the rear end ot the main frame and drawn thereby so as to harrow the ground at the same time that it is plowed.

lVhile the machine in the embodiment herein shown and described is used Jfor plowing, it is obvious that many o' the important features of the invention may be used in other relations, and in connection with other types of implements. Many modifications may be made also in the construction ot the mechanism by which the various operations are eii'ected, without departing from salient features ot the invention expressed in the claims.

1lllhat is claimed is:

l. ln a tractor implement, the combination ot main trame, an engine pivotally nounted to swing about a vertical axis located on the front portieri of said frame at one side thereof, a traction wheel journaled on the engine frame and driven 1Ironi sait engine, said traction wheel being in substantially the same vertical plane as the Vaxis about which the engine swings, a wheel supportinov the opposite side of said engine and main 'lraineand a wheeled support tor the rear end of the trame.

2. ln a tractor implement, theconibination of main frame, anV engine pivotally connected to said frame to swing about a vertical axis thereon, a. roller carri o by sait e track secured to the main traine on which the roller rides as the Vengine is swung its axis, a traction wheel journaled on the engine trame at one side Ythereotl and driven from said engine, a wheel supporting the opposite side ot' said main trame, and means for maintaining said wheels in paralleli in.

l. ln a tractor implement, the combination of a main trame, an engine and a traction wheel operatively connected together a d pivot-ally mounted to swimT as a unit about a vertical axis at one side or the main rrame, land side wheel mounted to swing about a vertical airis at the other side 'the main frame and supporting the and means for maintaining a parallel rela tion between the two wheels.

el. ln a tractor implement, the combination of a main frame, including a central longitudinal beam with a transverse bar secured to its forward end and terminating at its ends in forwardly projecting arms, a land side wheel in supporting relation to one oi' said arms and pivoted to swing about a vertical axis thereon, an engine pivoted at one side to swing about a vertical axis On the other arm and supported at the other side to ride on said main frame, a bull wheel journaled on said engine at the side opposite the land side wheel, means 1for maintainingl the bull wheel and land side wheel in allel relation, and means for supporting the rear end of the main trame.

5. ln a tractor implement, the combination of a main frame, an engine and bull wheel at the front end or" said frame and mounted to swing as a unit about a vertical axis with respect thereto, a land side wheel at the iront end of the frame, means` for swinging the land side wheel in parallel relation to the bull wheel, a horiontal ring secured to the rear end of the main frame, a second ring slidable circumferentially of the vlirst mentioned ring and in supporting relation thereto, and a rear ground wheel journaled in and supporting said second ring. Y f

6. ln a tractor implement, the combination of a main trame, a wheel' supporting e at a distance from its axisjan arone side of the iront portion of the Vtraine and mounted to swing about a vertical pivot, an engine mounted to swing about a vertical pivot at the other side oi' the iront portion yof the main trame and riding on said lrame as it swings, a traction wheel journaled on the engine frame with its center directly above the pivotal connection between the engine frame and main frame, a driving connection between the engine and the traction wheel, and means for maintaining said wheels in parallelism.

7*. ln a tractor implement, the combination of a main frame having two front supporting wheels located at opposite sides thereof and one rear supporting wheel, an engine mounted on said frame and operable to drive one of the front wheels, means for swinging said engine and driven wheel as a unit with respect to the main frame about a verticaly axis which passes substantially through the center of the driven wheel, and means for simultaneously swinging the other liront wheel about a vparallel axis so as to maintain it in parallel relation t-o the driven wheel.

8. In a tractor implement, the combination of a main frame having two iront supporting wheels located at opposite sides thereof and one rear supporting wheel, an engine mounted yon said frame and operable to drive one of the front wheels, means for swinging said engine and driven wheel as a unit with respect to the main trame about a vertical anis which passes substantially through the center of the driven wheel, means for simultaneously swinging the other front wheel about a parallel axis so as to maintain it in parallel relation to the driven wheel, and means selectively operable by the engine to turn the rear supporting wheel about a vertical axis.

9. ln a tractor implement, the combination of a main frame, a wheeled support at the rear end of the trame, an engine and traction wheel at the front end of the main trame, said traction wheel having an internal gear, a roller gear driven from theengine and in mesh with said internal gear, said engine and traction w ieel being mounted to swing as unit on the main frame about a vertical axis which passesV substantially through the center of the traction wheel, a front supporting wheel at the side opposite the traction wheel and mounted to swing about an axis parallel to the axis of the engine and traction wheel, and means for maintaining the parallel relation between the traction wheel and other front supporting wheel.

lO. ln a tractor implement, the combination of a main frame having supporting and steering wheels at its iront end said wheels being mounted to swing in said trame about parallel vertical axes, means for always YVsc-enig mounted to swing in said trame about parallel vertical axes, means tor always mai taining said wheels in parallel relation to each other, an engine in driving relation to one of the iront wheels and mounted to swing as a unit therewith, a horizontally disposed ring secured to the rear end of the main fra-me and having an annular channel in its under side, a second ring mounted `lor circumferential sliding movement in said channel, a rear supporting' wheel having an axle in supporting relation to the second ring, and gearing selectively driven from the engine for moving the second ring circumterentially to swing the rear support-Y ing wheel about a vertical axis.

l2. in a tractor implement, the combination of a main trame having supporting and steering wheels at its front endjsaid wheels being mounted to swing in said trame about parallel vertical axes, meals for always maintaining said wheels in parallel relation to each other, an engine in driving relation to one oi' said wheels and mounted to swing as a unit therewith, a horizontally disposed ring secured to the rear end ot' the frame and having an annular channel in its under side, a second ring mounted for circumferential sliding movement in said channel, a rear supporting wheel having an axle in supporting relation to the second ring and normally perpendicular to the line oi travel, gearing selectively driven from the engine for moving the second ring circumierentially to swing tho rear supporting wheel about a vertical axis, means for automatically disconnecting said second ring from the engine when the rear wheel has been swung in a predetermined plane transverse to the line of travel, and means for driving said rear wheel from the engine when in that position.

13. ln a tractor implement, the combination of a main frame having supporting and steering wheels at its front end, said wheels being mounted to swing in said trame about parallel vertical axes, means for always maintaining said wheels in parallel relation to each other, an engine in driving relation to one of said wheels and the rear wheel has been swung into i 'i rccleterrninetl plane transverse to the e of travel, and. nicans or driving' said rea: wheel frein the engine whe' 1n that nosition.

11i. n a tractor ii'i'iplenient, the coni tion of a inain iframe, an engine pivot-a inonnteci to s on the 'iront portion of L vertical axis a t said 'traine about wheel jonrnaleel on the er i sicle thereoi an@L concentric i lhaft of the engine, ineens for clri/Y raction wheel roni the crank slia"'" ng'ine, a wheel support-inf; the opposite i fc of `he engine and Inain fran-ie, and a wb support for the rear end. of the l5. In a tractor' implement, the co tion oi' a niain traine, an engine pivoeally inonntecl to swingA on tbe 'front p rtion oi said frame about a vertical a wheels supporting said niain traine intl engine including a traction wheei joni'naled on the engine 'traine at one side thereof and having an operative connection vv the engine, a cintch controlling' the connection, a lever fulcrunied on the traino, and ineens including a link connecting the lever to tne clutch for actuating the latter, the point or" connection between said. nieans and the lever being verticaily above the center of oscillation o" the engine, so that its ope lation will not be atl'ectecl by a change in t ie position of the engine.

16. in a tractor inpleinent, the combination of a main frame having two front sup- Y 'the niain trame, a clutch controlling` tl e con wheei, a lever nlcrnrnecl on the frame, i'neans inolncline a linl: connecting the lever to the clutch for actuating the latter, the point of connection between said nieans and the lever Vbeing vertically above the center of osciliation of saicl engine and driven wheel, so that vits operation will not be afecteil by a change in the position ot the engine, and ineens selectively operable by the engine to turn the rear supporting wheel about a. vertical anis. Y l

17. 1n a tractor implement, the combination of an engine raine having' a crank shaft disposed transversely thereof, a projection at one side of the engine Vtraine forming aide, a traction wheel'jonrnaled sin-:l axle. a driving connection between traction wheel to be swung laterally as a` unit, and ineans for maintaining,v the two wheels parallel.

In testimony, that olaini the foregoing as my own, I have hereto affixed my signa ture.

MARTN R. BRUNER.

ection between the enn'ine and driven- 

